#3977fd
a balanced, electric blue · cool · closest name: royalblue
RGB
57, 119, 253
HSL
221°, 98%, 61%
CMYK
78, 53, 0, 1
Luminance
0.2116
Every format
| HEX | #3977fd |
| RGB | rgb(57, 119, 253) |
| HSL | hsl(221, 98%, 61%) |
| CMYK | cmyk(78%, 53%, 0%, 1%) |
| LAB | lab(53.1 26.7 -72.4) |
| LCH | lch(53.1 77.1 290.2) |
| OKLCH | oklch(0.605 0.210 263.0) |
Copy-ready code
/* CSS */
color: #3977fd;
background-color: #3977fd;
/* Tailwind (arbitrary) */
class="text-[#3977fd] bg-[#3977fd]"
/* SCSS */
$brand: #3977fd;
/* SwiftUI */
Color(red: 0.224, green: 0.467, blue: 0.992)
/* Android */
Color.parseColor("#3977fd")Accessibility — WCAG contrast
Aa
#3977fd on white: 4.01:1
AA ✗ fail · AA-large ✓ · AAA ✗
Aa
#3977fd on black: 5.23:1
AA ✓ pass · AA-large ✓ · AAA ✗
true color
protanopia
deuteranopia
tritanopia
RGB percentages
Red22.4%
Green46.7%
Blue99.2%
CMYK percentages
Cyan77.5%
Magenta53.0%
Yellow0.0%
Key (black)0.8%
Color previews
#3977fd text on a black background
contrast 5.23:1
Card sample
#3977fd text on a white background
contrast 4.01:1
Card sample
CSS3 live lab
Text font color
The quick brown fox
color: #3977fd;
Background color
Panel with #3977fd background
background-color: #3977fd;
Text shadow — hex
Glowing headline
text-shadow: 2px 2px 8px #3977fd;
Text shadow — RGB
Soft neon halo
text-shadow: 0 0 14px rgba(57, 119, 253, 0.45);
Div box shadow
Elevated card
box-shadow: 0 12px 32px -8px rgba(57, 119, 253, 0.45);
Border & gradient
Gradient panel
border: 3px solid #3977fd; background: linear-gradient(135deg, #3977fd, #7E39FD);